Resetting of a tandem microRNA156 enables vegetative perennial growth in rice.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 41855340.
- Also identified by DOI 10.1126/science.adv2188.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Annual cultivated rice was domesticated from perennial wild rice, yet the genetic mechanism of perennial growth habit remains unclear. Using introgression lines of wild and cultivated rice, we identified the <i>Endless Branches and Tillers</i> (<i>EBT1</i>) locus, comprising tandem microRNA156 genes (<i>MIR156BC</i>). This locus is responsible for floral reversion and vegetative propagation contributing to perennial growth in wild rice. The wild rice allele <i>EBT1</i><sup>W1943</sup> exhibits higher chromatin accessibility and lower levels of the repressive histone mark H3K27me3 to reset <i>MIR156BC</i> expression in tiller buds compared with the cultivated allele. Additionally, we introgressed <i>EBT1</i> and prostrate growth genes <i>PROG1</i> and <i>TIG1</i> to generate recombinant lines exhibiting a robust perennial habit. Our findings pave the way for developing sustainable perennial rice cultivars in the future.
Medical subject headings
- Oryza
- MicroRNAs